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GPT-5.5 Pro
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GPT-5.5 Pro

1.1M context$30.00/M input$180.00/M output

GPT-5.5 Pro is an AI model from OpenAI built for agent workflows, with support for file, image, text input and text output. GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...

What is GPT-5.5 Pro?

GPT-5.5 Pro is an AI model from OpenAI that Agent Mag tracks for pricing, context window, modalities, benchmarks, and API compatibility. Builders can use this page to compare GPT-5.5 Pro against other models for agent workflows and production deployments.

Model ID

GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...

Modalities
Input
fileimagetext
Output
text
Supported Parameters
include_reasoningmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools

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